Stone-channeling machine



(No Model.) 2 sheets-sheet 1.

W. H. BRYANT. STGNB GHANNELING MACHINE.

No. 471,265. Patented Mar. z2, 1892.`

ATTORNEY'.

(No Model.) 2 Sheets-Sheet 2.

W. H. BRYANT. STONE GHANNELING MACHINE.

Patented Mar. 22, 1892.

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ArnNr STONE-CHANNELING MACHINE.

SPECIFICATION forming part'of Letters Patent No. 471,265, dated March 22, 1892.

' Application filed July 13, 1891. Serial No. 399,272. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. BRYANT, a citizen of the United States, residing at North Amherst, in the county of Lorain and State of Ohio, have invented certain new and useful Improvements in Stone-Channeling Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to stone-channeling machines; and the invention consists in a sectional lever having a central pivot-point or fulcrum and a compressible buffer of suitable material on either side of the fulcrum and between the lever-sections, all as hereinafter fully described, and particularly pointed out in the claims.

Figure l is a side elevation of a portion of the frame-work of the machine and the lever and the mechanism immediately connected therewith. Fig. 2 is a view corresponding` to Fig. 1 in all particulars, except that in this view there is a modification in the construc tion of the lever, in which the fulcrum portion of each lever-section is a separate casting, and the lever consists of the bars proper extending through these castings and fastened therein. Figs. 3, 4, and 5 are details of the upper and lower fulcrum castings shown in Fig. 2, and serving to illustrate more clearly the method of connecting the parts, as hereinafter more fully described. Fig. 6 is a transverse section on line @c 0c, Fig. 2, illustrating the fulcrum and adjusting mechanism ofthe lever. Fig. 7 is an enlarged view of the upper portion of Fig. 6, as shown in said figure. Fig. 8 shows a detail of the clamp for the hand-wheel to keep it from rising when turned. Fig. 9 is a detail of the fulcrum-pin, and Fig. lO a detail of the locking-plate therefor. Fig. l1 is a modification of the lever-supporting mechanism, showing two pivots.

A represents the main frame, and B the supporting-wheels.

O is the usual operating-disk, and c the crank-pin, through which power is applied to the lover.

and E, one overlapping the other about half the length of each and having a central ful- The lever consists of two parts Dv crum or pin d, on which they are pivotally supported.- At either side of this pivot or fulcrum and between the two sections of the lever are compressible buffers F, preferably of rubber; but other suitable material or form of spring maybe employed, and the said buffers are held in position by plates f, fixed to the respective levers. These bu tfers or springs are designed to give the necessary elasticity to the lever.

In Fig. 1 the lever-sections are shown as made in a single piece, including the fnlcrum or central portion, and to give them the requisite strength it is necessary to produce them by drop-forging instead of casting; but, owing to their peculiar construction at the pivot-point,Ihave found that drop-forging is tedious and expensive, and hence prefer the method of making and the constru ction shown in Fig. 2. In this construction 1 employ separate cast steel or equivalent fulcrum-sections H, one of which has ears h and the other a tongue h Fig. 6, with eyes for the fulcrum pin d. A corresponding construction occursin Fig. l, so far as the method of connecting the two sections is concerned. The levers D and E may then be made of wrought iron and projected through the fulcrum-secticns and locked therein by keys g, as shown in Figs. 3 and 4.-, or in any other suitable way. Now in order that the fulcrum of the lever may be adjusted or raised and lowered to meet the requirements of the work, I provide a suitable supporting-frame for the lever at or about its pivot-point, consistingin this instance of two front postsIand a corresponding rear standard I', preferably made a part of the supporting-frame, though this is not necessary,and the fourpostsare connected at the top by a plate t', which forms a bearing and support for the hand-wheel L. This wheel is threaded to engage the adjustingrod N, and at its lower end the said rod is rigidly secured to the yoke M, which reaches down over the two lever-sections on both sides thereof and has eyes for the pivot or fulcrum-bolt d. To keep the hand-.wheel down to working position at all times, I place a threaded clamping-ring m on the neck Z thereof, which neck extends through beneath the plate D far enough to be engaged bysaid clamp. The clamp turns with the hand-wheel IOO and prevents it from gettin gaway from working position.

The pivot or fulcrum bolt or pin (Z is provided with a head having an oblong tongue d', and a plate cl2, Fig. 10, attached to the yoke M, has a slot to match said tongue and engages the same to prevent the bolt from turning, 'and thus preventing its Wearing on the yoke.

In Fig. 1l I show a modification of the lever connections, in which each lever-section has a separate fulcruin d on the yoke M, and the buffers F are arranged on these levers just as they are in the other forms of lever shown. The invention is thus shown to be susceptible ot more or less modification in and about the pivot-point of the lever, and such modification may be made without departing from the spirit of the invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isn

l. In a channcling-machine, asectional cutter-lever pivoted at the center where the ends of the sections overlap, and spring-bufers on opposite sides of the pivot-point between the lever-sections, substantially as described.

2. In a chanueling-machine, a cutter-lever consisting of two sections overlapping each other, a central pivot-support for said secnected by a pivot-bolt, and buffers in the.

space between the sections, substantially as described.

5. In a channeling-machine, the lever consisting of two fulerum-pieces having lateral projections with eyes for the pivot-bolt bars extending through said pieces on both sides of the pivot-point, and buffer-sp rings between the inner end of each bar and thebodyot the other bar, substantially as described.

fitness my hand to the foregoing specification this Sth day of' July, 1891.

WILLIAM Il. BRYANT.

Witnesses:

Il. G. REDINGTON, E. F. STEELE. 

